Johnson, Joan C. (née Carlson) – On May 16th, 2020, 83 years of age, longtime resident of School Street in Northport, NY. Spent many years working at Northport High School as a Teacher's Aide. Loving wife of Douglas H. Johnson. Beloved mother of Lauren (Mark) Johnson Robbins of Danville, PA, Kerstin (Chris) Janssen of Lake Grove, NY, & Erika (Michael) Radecki of Centerport, NY. Cherished grandmother of Elise, Anika, Olivia, Hunter, Eric, Ethan, Logan, & the late Emma. Dear sister of John Carlson and Anita Nygren. Services will be private. In lieu of flowers donations may be made to Alzheimer’s Foundation of America.